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SLC 500 Modular 
Hardware Style
Catalog Numbers
1747-L511, 1747-L514, 1747-L524, 
1747-L531, 1747-L532, 1747-L533, 
1747-L541, 1747-L542, 1747-L543, 
1747-L551, 1747-L552, 1747-L553
User Manual
Important User Information Solid state equipment has operational characteristics differing from those of 
electromechanical equipment. Safety Guidelines for the Application, 
Installation and Maintenance of Solid State Controls (publication SGI-1.1 
available from your local Rockwell Automation sales office or online at 
http://literature.rockwellautomation.com) describes some important 
differences between solid state equipment and hard-wired electromechanical 
devices. Because of this difference, and also because of the wide variety of 
uses for solid state equipment, all persons responsible for applying this 
equipment must satisfy themselves that each intended application of this 
equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for 
indirect or consequential damages resulting from the use or application of 
this equipment.
The examples and diagrams in this manual are included solely for illustrative 
purposes. Because of the many variables and requirements associated with 
any particular installation, Rockwell Automation, Inc. cannot assume 
responsibility or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to 
use of information, circuits, equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without 
written permission of Rockwell Automation, Inc., is prohibited.
Throughout this manual, when necessary, we use notes to make you aware 
of safety considerations.
WARNING
Identifies information about practices or circumstances that can cause 
an explosion in a hazardous environment, which may lead to personal 
injury or death, property damage, or economic loss.
IMPORTANT Identifies information that is critical for successful application and 
understanding of the product.
ATTENTION Identifies information about practices or circumstances that can lead 
to personal injury or death, property damage, or economic loss. 
Attentions help you identify a hazard, avoid a hazard, and recognize 
the consequence
SHOCK HAZARD Labels may be on or inside the equipment, for example, a drive or 
motor, to alert people that dangerous voltage may be present.
BURN HAZARD Labels may be on or inside the equipment, for example, a drive or 
motor, to alert people that surfaces may reach dangerous 
temperatures.
Publication 1747-UM011G-EN-P - June 2008
Summary of Changes
The information below summarizes the changes to this manual since the last 
printing.
To help you find new and updated information in this release of the manual, 
we have included change bars as shown to the right of this paragraph.
For information on See
Processor communication options for Modbus RTU Master page 33, page 34, page 35
Modbus RTU feature on the SLC 5/03 processor page 86, page 88
Modbus RTU feature on the SLC 5/04 processor page 89, page 91
Modbus RTU feature on the SLC 5/05 processor page 92, page 94
Modbus RTU Master communication page 202, page 210
3 Publication 1747-UM011G-EN-P - June 2008
4 Summary of Changes
Notes:
Publication 1747-UM011G-EN-P - June 2008
Table of Contents
Preface
Who Should Use This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Purpose of This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Common Techniques Used in This Manual . . . . . . . . . . . . . . . . . . . . . 14
Chapter 1
Quick Start for Experienced Users Required Tools and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Chapter 2
Selecting Your Hardware 
Components
European Union Directive Compliance . . . . . . . . . . . . . . . . . . . . . . . . 28
EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Low Voltage Directive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Overview of Your Modular Control System. . . . . . . . . . . . . . . . . . . . . 29
Principles of Machine Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Selecting Modular Processors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Processor Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Processor Communication Options . . . . . . . . . . . . . . . . . . . . . . . . 32
Selecting Discrete I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Selecting Specialty I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Selecting Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
1746-P7 Current Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Example for Selecting Power Supplies . . . . . . . . . . . . . . . . . . . . . . 37
Example Worksheet for Selecting a 1746 Power Supply . . . . . . . . 38
Selecting Enclosures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Selecting Operator Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Programming with a Personal Computer . . . . . . . . . . . . . . . . . . . . 40
AIC+ Advanced Interface Converter (1761-NET-AIC) . . . . . . . . 40
1747-PIC RS-232/DH485 Interface Converter . . . . . . . . . . . . . . . 40
1747-UIC USB to DH485 Interface Converter . . . . . . . . . . . . . . . 41
Monitoring with a Data Table Access Module. . . . . . . . . . . . . . . . 41
Monitoring with a PanelView or PanelView Plus 
Operator Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Selecting a Memory Module for the SLC 5/01 and SLC 5/02 
Processors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
EEPROM Memory Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Memory Backup for the 1747-L511, SLC 5/01 Processor . . . . . . 43
Selecting a Memory Module for SLC 5/03, SLC 5/04, and 
SLC 5/05 Processors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
EEPROM Burning Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Selecting Isolation Transformers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Special Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Class I, Division 2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Selecting Contact Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
5 Publication 1747-UM011G-EN-P - June 2008
6 Table of Contents
Chapter 3
System Installation 
Recommendations
System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Environment and Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Hazardous Location Considerations. . . . . . . . . . . . . . . . . . . . . . . . 57
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Spacing Your Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Preventing Excessive Heat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Grounding Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Connect Equipment GroundingConductor to Ground Bus . . . . 61
Connect Ground Bus to Grounding-Electrode System. . . . . . . . . 62
Special Grounding Considerations for dc Applications 
using 1746-P3 (previous to revision B). . . . . . . . . . . . . . . . . . . . . . 64
Determining the Date of the SLC 500 Series A Chassis . . . . . . . . 66
Master Control Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Emergency-Stop Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Power Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Common Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Isolation Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Grounded ac Power-Distribution System with 
Master-Control Relay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Power Supply Required Input Voltage Characteristics . . . . . . . . . 69
Loss of Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Input States on Power Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Power Supply Undervoltage Operation . . . . . . . . . . . . . . . . . . . . . 70
SLC 500 Operation with 24V dc User Power Overcurrent 
Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Safety Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Disconnecting Main Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Safety Circuits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Periodic Tests of Master Control Relay Circuit . . . . . . . . . . . . . . . 72
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Chapter 4
Mounting Your SLC 500 Control 
System
Mounting Modular Hardware Style Units . . . . . . . . . . . . . . . . . . . . . . . 75
4-slot Modular Chassis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
7-slot Modular Chassis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
10-slot Modular Chassis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
13-slot Modular Chassis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Link Coupler (AIC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Data Table Access Module (DTAM, DTAM Plus, and 
DTAM Micro) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
AIC+ Advanced Interface Converter (1761-NET-AIC)
DeviceNet Interface (1761-NET-DNI)
Publication 1747-UM011G-EN-P - June 2008
Ethernet Interface (1761-NET-ENI) . . . . . . . . . . . . . . . . . . . . . . . 80
Table of Contents 7
Chapter 5
Identifying the Components of 
Your Processor
SLC 5/01 Processor Hardware Features. . . . . . . . . . . . . . . . . . . . . . . . 81
SLC 5/02 Processor Hardware Features. . . . . . . . . . . . . . . . . . . . . . . . 83
SLC 5/03 Processor Hardware Features. . . . . . . . . . . . . . . . . . . . . . . . 86
SLC 5/04 Processor Hardware Features. . . . . . . . . . . . . . . . . . . . . . . . 89
SLC 5/05 Processor Hardware Features. . . . . . . . . . . . . . . . . . . . . . . . 92
Keyswitch for the SLC 5/03, SLC 5/04, and SLC 5/05 Processors. . 95
RUN Position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
PROG Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
REM Position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Chapter 6
Installing Your Hardware 
Components
Compliance to European Union Directives . . . . . . . . . . . . . . . . . . . . . 97
EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Low Voltage Directive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Install Your Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Installing Your Processor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Install Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Install Your Memory Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Remove the Memory Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Install Your Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Install Your Chassis Interconnect Cable . . . . . . . . . . . . . . . . . . . . . . . 108
Chapter 7
Wiring Your I/O Modules Defining Sinking and Sourcing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Contact Output Circuits — ac or dc. . . . . . . . . . . . . . . . . . . . . . . 112
Solid-State dc I/O Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Preparing Your Wiring Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Recommendations for Wiring I/O Devices . . . . . . . . . . . . . . . . . . . . 115
Features of an I/O Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Wiring Your I/O Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Octal Label Kit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Apply the Octal Filter Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Apply the Octal Door Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Octal Kit and I/O Module Information. . . . . . . . . . . . . . . . . . . . 118
Using the Removable Terminal Block (RTB) . . . . . . . . . . . . . . . . . . . 119
Remove the RTB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Install the RTB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Chapter 8
Starting Up Your Control System Procedures for Starting the Control System . . . . . . . . . . . . . . . . . . . . 121
1. Inspect Your Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
2. Disconnect Motion-Causing Device . . . . . . . . . . . . . . . . . . . . . . . . 122
Publication 1747-UM011G-EN-P - June 2008
3. Initialize and Test Your Processor . . . . . . . . . . . . . . . . . . . . . . . . . 123
4. Test Your Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
8 Table of Contents
Input Troubleshooting Steps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
5. Test Your Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Output Troubleshooting Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
6. Enter and Test Your Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
7. Observe Control Motion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
8. Conduct a Dry Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Chapter 9
Maintaining Your Control System Handling and Storing Battery, Catalog Number 1747-BA. . . . . . . . . 133
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Storing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Transporting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Install and Replace the Battery of the SLC 5/01 or SLC 5/02Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Replace Your SLC 5/03, SLC 5/04, or SLC 5/05 Battery . . . . . . . . 137
Replacing Retainer Clips on an I/O Module . . . . . . . . . . . . . . . . . . . 138
Remove Damaged Retainer Clips . . . . . . . . . . . . . . . . . . . . . . . . . 139
Install New Retainer Clips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Replace a Fuse on the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . 139
Chapter 10
Troubleshooting Contacting Rockwell Automation for Assistance. . . . . . . . . . . . . . . . 141
Tips for Troubleshooting Your Control System . . . . . . . . . . . . . . . . 142
Removing Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Replacing Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Program Alteration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Troubleshooting the SLC 5/01 and SLC 5/02 Processors . . . . . . . . 143
Identifying SLC 5/01 and SLC 5/02 Processor Errors . . . . . . . . 144
Identifying SLC 5/02 Processor Communication Errors . . . . . . 148
Troubleshooting the SLC 5/03, SLC 5/04, and 
SLC 5/05 Processors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Clearing SLC 5/03, SLC 5/04, and SLC 5/05 Processor 
Faults Using the Keyswitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Identifying SLC 5/03, SLC 5/04, and SLC 5/05 
Processor Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Identifying SLC 5/03, SLC 5/04, and SLC 5/05 Processor 
Communication Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Identifying Processor Errors while Downloading an 
Operating System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Returning the SLC 5/03, SLC 5/04, and SLC 5/05 Processors 
to Initial Factory Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Troubleshooting Your Input Modules . . . . . . . . . . . . . . . . . . . . . . . . 163
Input Circuit Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Publication 1747-UM011G-EN-P - June 2008
Troubleshooting Your Input Modules . . . . . . . . . . . . . . . . . . . . . 164
Table of Contents 9
Troubleshooting Your Output Modules . . . . . . . . . . . . . . . . . . . . . . . 165
Output Circuit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Troubleshooting Your Output Modules. . . . . . . . . . . . . . . . . . . . 166
Chapter 11
Replacement Parts Replacement Cables and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . 169
Cable Connectivity Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Replacement Terminal Blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Other Replacement Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Appendix A
Specifications SLC 500 System General Specifications . . . . . . . . . . . . . . . . . . . . . . . 175
Processor General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Power Supply Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
1746-P1, 1746-P2, 1746-P3, and 1746-P4 Power Supplies . . . . . 177
1746-P5, 1746-P6, and 1746-P7 Power Supplies . . . . . . . . . . . . . 179
Appendix B
Setting Up the DH-485 Network DH-485 Network Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
DH-485 Network Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
DH-485 Token Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
DH-485 Network Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Devices that Use the DH-485 Network . . . . . . . . . . . . . . . . . . . . . . . 183
1747-AIC Isolated Link Coupler for DH-485 . . . . . . . . . . . . . . . . . . 184
1747-UIC USB to DH-485 Interface Converter . . . . . . . . . . . . . . . . 185
Example System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Configuring the SLC 5/03, SLC 5/04, and SLC 5/05 
Channel 0 for DH485 Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Important Planning Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Hardware Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Software Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Installing the DH-485 Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
DH-485 Communication Cable and Isolated Link Coupler . . . . 193
Installing the DH-485 Communication Cable . . . . . . . . . . . . . . . 193
Connecting the Communication Cable to the Isolated 
Link Coupler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Powering the Link Coupler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Installing and Attaching the Link Couplers . . . . . . . . . . . . . . . . . 199
Publication 1747-UM011G-EN-P - June 2008
10 Table of Contents
Appendix C
RS-232 Communication Interface RS-232 and SCADA Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
RS-232 Communication Interface Overview . . . . . . . . . . . . . . . . . . . 201
SLC 5/03, SLC 5/04, and SLC 5/05 processors and RS-232 
Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
SLC 500 Devices that Support RS-232 Communication . . . . . . . . . . 203
1747-KE Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
1746-BAS and 1746-BAS-T Modules . . . . . . . . . . . . . . . . . . . . . . 203
DF1 Protocol and the SLC 5/03, SLC 5/04, and SLC 5/05 
Processors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
DF1 Full-duplex Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Full-duplex (Point-to-Point) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
DF1 Half-duplex Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
DF1 Radio Modem Channel 0 Driver . . . . . . . . . . . . . . . . . . . . . 207
Modbus RTU Master Communication . . . . . . . . . . . . . . . . . . . . . . . . 210
ASCII Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
DF1/Modbus RTU Communication Protocol Modems Overview . 210
Wiring Connectors for RS-232 Communication . . . . . . . . . . . . . . . . 211
Types of RS-232 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
DTE Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
DCE Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Pin Assignments for Wiring Connectors . . . . . . . . . . . . . . . . . . . 213
Applications for the RS-232 Communication Interface. . . . . . . . . . . 220
DF1 Full-duplex Peer-to-peer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Half-duplex with Slave-to-slave Routing . . . . . . . . . . . . . . . . . . . 220
Appendix D
Setting Up the DH+ Network Data Highway Plus Communication Protocol Overview . . . . . . . . . 221
SLC 5/04 Processors and DH+ Communication . . . . . . . . . . . . . . . 222
DH+ Channel 1, 3-Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
DH+ Channel 1, 8-Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Wiring Connectors for DH+ Communication for SLC 5/04 
Processors. . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . 224
Minimizing Noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Typical DH+ Network Configuration . . . . . . . . . . . . . . . . . . . . . . . . 226
Appendix E
Power Supply Worksheet Power Supply Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Blank Worksheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Publication 1747-UM011G-EN-P - June 2008
Table of Contents 11
Appendix F
Control Networks Allen-Bradley Remote I/O Network . . . . . . . . . . . . . . . . . . . . . . . . . 231
Remote I/O Passthru . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
DeviceNet Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
The 1747-SDN DeviceNet Scanner . . . . . . . . . . . . . . . . . . . . . . . 233
The 1761-NET-DNI DeviceNet Interface . . . . . . . . . . . . . . . . . 234
DeviceNet Network Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
ControlNet Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
The 1747-SCNR ControlNet Scanner Module . . . . . . . . . . . . . . 236
The 1747-KFC15 ControlNet Messaging Module. . . . . . . . . . . . 236
Appendix G
Communicating with Devices on 
an Ethernet Network
SLC 5/05 Processors and Ethernet Communication. . . . . . . . . . . . . 237
SLC 5/05 Performance Considerations . . . . . . . . . . . . . . . . . . . . . . . 238
SLC 5/05 Processor and Personal Computer Connections to 
the Ethernet Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Ethernet Network Topology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Ethernet Channel 1 8-pin 10Base-T Connector. . . . . . . . . . . . . . 240
Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Ethernet Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Configuring the Ethernet Channel on the SLC 5/05 Processor . . . . 241
Configuration Using RSLogix 500 Programming Software . . . . . . . . 242
Configuration Via BOOTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Use the Rockwell BOOTP Utility. . . . . . . . . . . . . . . . . . . . . . . . . 244
Using DCHP Software To Configure Your Processor . . . . . . . . . . . 245
Using Subnet Masks and Gateways. . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Manually Configuring Channel 1 for Processors on Subnets . . . 247
SLC 5/05 Processor Embedded Web Server Capability . . . . . . . . . . 248
Module Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
TCP/IP Configuration Data (Read Only) . . . . . . . . . . . . . . . . . . 249
Diagnostic Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Data Table Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Data Table Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
User Provided Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Appendix H
Calculating Heat Dissipation for 
the SLC 500 Control System
Definition of Key Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Calculating Module Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . 261
Calculated Watts vs. Total Watts. . . . . . . . . . . . . . . . . . . . . . . . . . 262
Power Supply Loading Reference Table. . . . . . . . . . . . . . . . . . . . 263
Power Supply Heat Dissipation Graphs . . . . . . . . . . . . . . . . . . . . 266
Example Heat Dissipation Calculation . . . . . . . . . . . . . . . . . . . . . . . . 267
Example Worksheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Blank Worksheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Publication 1747-UM011G-EN-P - June 2008
12 Table of Contents
Glossary
Index
Publication 1747-UM011G-EN-P - June 2008
Preface
Read this preface to familiarize yourself with the rest of the manual. It provides 
information concerning:
• who should use this manual.
• the purpose of this manual.
• related documentation.
• conventions used in this manual.
Who Should Use This 
Manual
Use this manual if you are responsible for designing, installing, programming, 
or troubleshooting control systems that use SLC 500 programmable 
controllers.
You must have a basic understanding of electrical circuitry and familiarity with 
relay logic. 
Purpose of This Manual This manual describes the procedures you use to install, wire, and troubleshoot 
your controller. This manual:
• explains how to install and wire your controllers.
• gives you an overview of the SLC 500 programmable controller system.
Refer to the SLC 500 Instruction Set reference manual, publication 
1747-RM001, for the SLC 500 instruction set and for application examples to 
show the instruction set in use. Refer to your programming software user 
documentation for more information on programming your SLC 500 
programmable controller.
13 Publication 1747-UM011G-EN-P - June 2008
14 Preface
Additional Resources The table below provides a listing of publications that contain important 
information about SLC 500 controller systems.
You can view or download publications at 
http://literature.rockwellautomation.com. To order paper copies of technical 
documents, contact your local Rockwell Automation distributor or sales 
representative.
Common Techniques Used 
in This Manual
The following conventions are used throughout this manual:
• Bulleted lists, such as this one, provide information, not procedural 
steps.
• Numbered lists provide sequential steps or hierarchical information.
Pub. Number Pub. Title Description
1747-SG001 SLC 500 System Overview An overview of the SLC 500 family of products.
1747-IN007 SLC 5/03 and SLC 5/04 Processors Firmware/Operating 
System Upgrade Installation Instructions
Details on the latest operating system upgrade to the 
SLC 5/03 and SLC 5/04 processors.
1747-IN019 SLC 5/05 Processors Firmware/Operating System ControlFlash 
Upgrade Installation Instructions
Information on the SLC 5/05 ControlFlash upgrade.
1747-RM001 SLC 500 Instruction Set Reference Manual Detailed information on the SLC instruction set.
1761-UM004 Advanced Interface Converter (AIC+) User Manual A description on how to install and connect an AIC+ 
interface. This manual also contains information on 
network wiring.
1761-UM005 DeviceNet Interface User Manual Information on how to install, configure, and commission 
a DNI interface.
1761-UM006 MicroLogix Ethernet Interface User Manual Information on using the 1761-NET-ENI Ethernet 
interface.
1770-6.5.16 DF1 Protocol and command Set Reference Manual Information on DF1 protocol.
GMC-RM001 System Design for Control of Electrical Noise Information on reducing electrical noise.
1770-4.1 Allen-Bradley Programmable controller Grounding and Wiring 
Guidelines
Information on grounding and wiring Allen-Bradley 
programmable controllers.
SGI-1.1 Application Considerations for Solid-state Controls, 
publication 
A description of important differences between 
solid-state programmable controller products and 
hard-wired electromechanical devices.
— National Electrical Code - Published by the National Fire 
Protection Association of Boston, MA
An article on wire sizes and types for grounding electrical 
equipment.
AG-7.1 Allen-Bradley Industrial Automation Glossary A glossary of industrial automation terms and 
abbreviations.
Publication 1747-UM011G-EN-P - June 200815 Publication 1747-UM011G-EN-P - June 2008
Chapter 1
Quick Start for Experienced Users
This chapter can help you to get started using the SLC 500 Modular 
Processors. We base the procedures here on the assumption that you 
have an understanding of SLC 500 products. You should understand 
electronic process control and be able to interpret the ladder logic 
instructions required to generate the electronic signals that control 
your application.
Because it is a start-up guide for experienced users, this chapter does 
not contain detailed explanations about the procedures listed. It does, 
however, reference other chapters in this book where you can get 
more information.
If you have any questions or are unfamiliar with the terms used or 
concepts presented in the procedural steps, always read the 
referenced chapters and other recommended documentation before 
trying to apply the information.
This chapter:
• tells you what tools and equipment you need.
• lists how to install your chassis.
• lists how to install and wire your power supply.
• lists how to install and apply power to your processor.
• lists how to establish communication with the processor.
• describes how to return the SLC 5/03, SLC 5/04, and SLC 5/05 
processors to initial factory conditions if required.
16 Quick Start for Experienced Users
Required Tools and 
Equipment
Have the following tools and equipment ready:
• Medium blade screwdriver
• Programming equipment
• Compatible communication cable and/or interface (The table 
below indicates with an X, which cables are compatible with the 
SLC 5/01 through 5/05 processors.)
Procedures
Network Interface Processor
SLC 5/01 SLC 5/02 SLC 5/03 SLC 5/04 SLC 5/05
1747-UIC X(1)
(1) Requires 1747-C13 cable.
X(1) X(1)(4)
(4) Requires 1747-CP3 cable.
X(4) X(4)
1747-PIC X X X
1747-CP3 X X X
1784-PKTX(D) X(2)
(2) Requires 1784-CP14 cable.
X(2) X(2) X
1784-PCMK X(3)
(3) Requires 1784-PCM4 cable.
X(3) X(3) X(5)
(5) Requires 1784-PCM6 cable.
10/100Base-T Ethernet X
1. Check the contents of the shipping box. Reference
Unpack the shipping boxes making sure that the contents include:
• SLC 500 modular processor
– installation instructions (publication 1747-IN009)
• SLC 500 modular chassis (catalog numbers 1746-A4, 1746-A7, 1746-A10, or 
1746-A13)
– installation instructions (publication 1746-IN016)
• SLC 500 modular power supplies (catalog numbers 1746-P1, 1746-P2, 
1746-P3, 1746-P4, 1746-P5, 1746-P6, or 1746-P7)
– installation instructions (publication 1746-IN004)
If the contents are incomplete, call your local Rockwell Automation representative 
for assistance.
Publication 1747-UM011G-EN-P - June 2008
Quick Start for Experienced Users 17
 
2. Install the chassis. Reference
1. Determine the amount of spacing required for mounting your system. Chapter 3
(System Installation 
Recommendations)
C
1746-C9 Cable
SLC 500 Controller
1746-C7 Cable
D
SLC 500 Controller
SLC 500 Controller
B
C
A
B
C
A
B
B
SLC 500 Controller
SLC 500 Controller
SLC 500 Controller
A
1746-C9 
Cable
1746-C9 
Cable
C
Recommended Spacing
A. 15.3...20.0 cm (6...8 in.) when using the 1746-C9 cable. If you mount two 13-slot 
chassis above each other, the distance cannot exceed 10.2...12.7 cm (4...5 in.).
B. Greater than 10.2 cm (4 in.).
C. Greater than 15.3 cm (6 in.).
D. 6.35...10.2 cm (2.5...4 in.) when using the 1746-C7 cable. If you are using a 1746-P4 
power supply, your maximum spacing is 6.35 cm (2.5 in.).
B
 
Publication 1747-UM011G-EN-P - June 2008
18 Quick Start for Experienced Users
2. Drill holes in the backpanel of your enclosure and install the top mounting hardware. 
Use M4 or M5 (#10 or #12) phillips screw and star washer (or SEM screw).
3. Scrape off the paint from the backpanel between the chassis and backpanel.
4. Slide the chassis over the installed hardware and tighten the screws.
5. Install the remaining tab hardware.
Chapter 6
(Installing Your 
Hardware Components)
3. Install the power supply. Reference
1. Align the circuit board of the power supply with the card guides on the left side of the 
chassis, and slide the power supply in until it is flush with the chassis.
2. Fasten the power supply to the chassis.
Chapter 6
(Installing Your 
Hardware Components)
Publication 1747-UM011G-EN-P - June 2008
Use these screws to fasten the power supply to the chassis.
1.2 Nm (11 lb-in) Maximum Torque
Quick Start for Experienced Users 19
4. Make jumper selection for 120/240V ac on 1746-P1, 1746-P2, and 1746-P4 power supplies. Reference
Place the input voltage jumper to match the input voltage. This does not apply to the 
1746-P3, 1746-P5, 1746-P6, or 1746-P7 power supplies which do not have jumpers.
Chapter 6
(Installing Your 
Hardware 
Components)
ATTENTION Set the input jumper before applying power. Hazardous voltage is present on 
exposed pins when power is applied; contact with the pin may cause injury to 
personnel.
POWER POWER
1746-P1 and 1746-P2 Power Supplies
Fuse
Jumper Selection
100/120 Volts
200/240 Volts
1746-P4 Power Supply
Jumper Selection
85-132V ac
170-250V ac
Publication 1747-UM011G-EN-P - June 2008
20 Quick Start for Experienced Users
5. Wire power to the power supply. Reference
Connect incoming power.
Chapter 6
(Installing Your 
Hardware 
Components)ATTENTION Turn off incoming power before connecting wires. Failure to do so could cause 
injury to personnel and/or equipment.
User Power
Incoming Power
User Power
Incoming Power
Incoming 
Power
1746-P1 and 1746-P2 1746-P3
1746-P4
1746-P6
NOT USED
NOT USED
+24V dc
dc NEUT
CHASSIS GROUND
PWR OUT +24V dc
PWR OUT COM
+125V dc
dc NEUT
CHASSIS GROUND
User Power
PWR OUT +24V dc
PWR OUT COM
120/240V ac
V ac NEUT
CHASSIS GROUND
PWR OUT +24V dc
PWR OUT COM
85 to 132V ac
JUMPER
170 to 250V ac
L1: 85 to 132/170 to 250V ac
L2: NEUTRAL
CHASSIS GROUND
Incoming 
Power
1746-P5
PWR OUT +24V dc
PWR OUT COM
+48V dc
dc NEUT
CHASSIS GROUND
Incoming 
Power
+12/24V dc
dc NEUT
CHASSIS GROUND
Incoming
Power
User Power
User Power
NOT USED
NOT USED
1746-P7
IMPORTANT Terminal screws on the 1746-P1, 1746-P2, 1746-P3, 
1746-P5, 1746-P6, and 1746-P7 power supplies 
should be tightened with a maximum torque of 1 Nm 
(8.8 lb-in).
Terminal screws on the 1746-P4 power supply 
should be tightened with a max torque of 0.8 Nm 
Publication 1747-UM011G-EN-P - June 2008
(7 lb-in).
Quick Start for Experienced Users 21
6. Install the processor. Reference
Make sure system power is off. Then insert the processor into the 1746 chassis.
Chapter 2
(Selecting Your 
Hardware 
Components)
Chapter 6
(Installing Your 
Hardware 
Components)
IMPORTANT If your processor has a battery — the battery is an option for the SLC 5/01 
(1747-L511) processor — make sure it is connected before installing your 
processor into the chassis. This provides memory backup for your processor 
should the controller power supply fail.
IMPORTANT The SLC 500 modular processor must be inserted into the left slot (slot 0), as 
shown below. Remove the protective label on the power supply after installing 
the processor.
Module Release
Card 
Guide
Protective 
Label
Publication 1747-UM011G-EN-P - June 2008
22 Quick Start for Experienced Users
7. Apply power to the processor. Reference
1. Energize the chassis power supply.
2. Check the chassis power supply and processor status indicators. The power status 
indicator on the power supply should be on and the fault status indicator on the 
processor shouldbe flashing.
Chapter 8
(Starting Up Your 
Control System)
Chapter 10
(Troubleshooting)
Power supply and SLC 5/01 and SLC 5/02 processor 
status indicators
Power supply and SLC 5/03 and SLC 5/04 processor 
status indicators
The RUN status indicator on the SLC 5/01 
processor is actually labeled PC RUN. Also, 
the SLC 5/01 processor does not have a 
COMM status indicator.
The DH485 status indicator on the SLC 5/03 
processor is labeled DH+ on the SLC 5/04 
processor.
Power supply and SLC 5/05 processor 
status indicators Refer to the following key to determine the 
status of the status indicators:
COMMPOWER POWER
POWER
FLT
RUN
BATT
FORCE
CPU FAULT
RUN
FORCED I/O
BATTERY LOW
DH485
RS232
FLT
RUN FORCE
ENET
BATT
Indicates the status indicator is off.
Indicates the status indicator is on.
Indicates the status indicator is FLASHING.
Status of status indicator does not matter.
RS232
8. Load your software. Reference
Refer to your software package’s documentation. —
Publication 1747-UM011G-EN-P - June 2008
Quick Start for Experienced Users 23
9. Establish communication to the processor. Reference
Refer to the following to establish communication between the processor and your 
personal computer.
Chapter 8
(Starting Up Your 
Control System)
Set the communication parameters of software to match the default parameters of the processor.
Processor Procedure
SLC 5/01 Connect 1747-PIC interface from the processor to your personal computer serial port or 
connect 1747-UIC interface from the processor to your personal computer USB port, or use a 
1784-PKTX(D) or 1784-PMCK interface.
SLC 5/02 Connect 1747-PIC interface from the processor to your personal computer serial port or 
connect 1747-UIC interface from the processor to your personal computer USB port, or use a 
1784-PKTX(D) or 1784-PMCK interface.
SLC 5/03 Connect the 1747-PIC interface from the processor to your personal computer serial port or 
connect the 1747-UIC interface from the processor to your personal computer USB port to 
the processor by using the 1747-C13 or 1747-CP3 cable. You can also use a 1784-PKTX(D) or 
1784-PCMK interface, or a 1747-CP3 cable from channel 0 of the processor to the personal 
computer serial port.
SLC 5/04 Connect a 1747-CP3 cable from channel 0 of the processor to the personal computer serial 
port or connect the 1747-UIC interface from channel 0 of the processor to your personal 
computer USB port, or use a 1784-PKTX(D) or 1784-PCMK interface.
SLC 5/05 Connect a 1747-CP3 cable from channel 0 of the processor to the personal computer serial 
port, or connect the 1747-UIC interface converter from channel 0 of the processor to your 
personal computer USB port. For Ethernet connection, connect channel 1 of the processor 
and the PC Ethernet card to an Ethernet hub by using 10/100Base-T compatible cable.(1)
(1) EtherNet/IP address must first be set via BOOTP or an RS-232 connection. See appendix C for more information.
Comms Channel Channel 0 
Configuration
Channel 1 Configuration
SLC 5/01 and 5/02 SLC 5/03, 5/04, and 5/05 SLC 5/03 SLC 5/04 SLC 5/05
DH-485:
• 19.2 Kbaud
• node address = 1
DF1 Full-duplex:
• no handshaking
• 19.2 Kbaud
• CRC Error Check
• duplicate packet, 
detect on
• no parity
DH-485:
• 19.2 Kbaud
• node address = 1
DH+:
• 57.6 Kbaud
• node address = 1
Ethernet:
BOOTP enabled
Publication 1747-UM011G-EN-P - June 2008
24 Quick Start for Experienced Users
10. (Optional) Return the SLC 5/03, SLC 5/04, or SLC 5/05 processor to initial factory conditions. Reference
Use this procedure if the communication channels are shut down due to configuration 
parameters, or if you absolutely cannot establish communication with the processor.
Chapter 10
(Troubleshooting)
1. Remove power from the SLC 500 power supply.
2. Remove the processor from the chassis.
3. Disconnect the battery by removing the battery connector from its socket.
4. Locate the VBB and GND connections on the right side of the motherboard.
5. Place a small bladed screwdriver across the VBB and GND connections and hold for 60 
seconds. This returns the processor to the initial factory conditions.
ATTENTION If you return the processor to the initial factory conditions, the communication 
configurations are returned to their default settings and the user program is 
cleared.
Publication 1747-UM011G-EN-P - June 2008
Quick Start for Experienced Users 25
Mother Board
Right Side View
Ke
ys
w
itc
h Mother Board
GND
VBB
GN
D
VB
B
SLC 5/03 Processors (1747-L531, 1747-L532, and 1747-L533)
Ke
ys
w
itc
h
Mother Board
Right Side View
Mother Board
GND
VBB
SLC 5/04 Processors (1747-L541, 1747-L542, and 1747-L543)
SLC 5/05 Processors (1747-L551, 1747-L552, and 1747-L553)
GND VBB
Publication 1747-UM011G-EN-P - June 2008
26 Quick Start for Experienced Users
Notes:
Publication 1747-UM011G-EN-P - June 2008
27 Publication 1747-UM011G-EN-P - June 2008
Chapter 2
Selecting Your Hardware Components
This chapter provides general information on what your SLC 500 
controller can do, an overview of the modular control system, and 
special considerations for controller installations. It also explains how 
to select:
• chassis.
• modular processors.
• discrete I/O modules.
• specialty I/O modules.
• power supplies.
• enclosures.
• operator interfaces.
• memory modules.
• isolation transformers.
This chapter does not provide you with all the information that you 
need to select a complete SLC 500 control system. To do this, we 
recommend that you use the latest version of the system overview, 
SLC 500 Programmable Controllers and I/O Modules, publication 
1747-SG001.
28 Selecting Your Hardware Components
European Union Directive 
Compliance
If this product has the CE mark it is approved for installation within 
the European Union and EEA regions. It has been designed and tested 
to meet the following directives.
EMC Directive
This product is tested to meet Council Directive 89/336/EEC 
Electromagnetic Compatibility (EMC) and the following standards, in 
whole or in part, documented in a technical construction file:
• EN 50081-2
EMC - Generic Emission Standard, Part 2 - Industrial 
Environment
• EN 50082-2
EMC - Generic Immunity Standard, Part 2 - Industrial 
Environment
This product is intended for use in an industrial environment.
Low Voltage Directive
This product is tested to meet Council Directive 73/23/EEC Low 
Voltage, by applying the safety requirements of EN 61131-2 
Programmable Controllers, Part 2 – Equipment Requirements and 
Tests.
For specific information required by EN61131-2, see the appropriate 
sections in this publication, as well as the Industrial Automation 
Wiring and Grounding Guidelines for Noise Immunity, publication 
1770-4.1.
Publication 1747-UM011G-EN-P - June 2008
Selecting Your Hardware Components 29
Overview of Your Modular 
Control System
The basic modular controller consists of a chassis, power supply, 
processor (CPU), Input/Output (I/O modules), and an operator 
interface device for programming and monitoring. The figure below 
shows typical hardware components for a modular controller.
Chassis
Programming 
Terminal
Programming Personal 
Computer
Power 
Supply
Processor 
Module
Input 
Module
Output 
Module
Combination 
I/O Module
OR
Modular Hardware Components Modular Controller
Publication 1747-UM011G-EN-P - June 2008
30 Selecting Your Hardware Components
Principles of Machine Control
You enter a ladder logic program into the controller by using the 
software. The logic program is based on your electrical relay printdiagrams. It contains instructions that direct control of your 
application.
With the ladder logic program entered into the controller, placing the 
controller in the Run mode initiates an operating cycle. The 
controller’s operating cycle consists of a series of operations 
performed sequentially and repeatedly, unless altered by your ladder 
logic program.
1. Input scan - The time required for the controller to scan and 
read all input data; typically accomplished within a few 
milliseconds.
2. Program scan - The time required for the processor to execute 
the instruction in the program. The program scan time varies 
depending on the instruction used and each instruction’s status 
during the scan time.
3. Output scan - The time required for the controller to scan and 
write all output data; typically accomplished within a few 
milliseconds.
4. Service communication - The part of the operating cycle in 
which communication takes place with other devices, such as an 
HHT or a personal computer.
➀
➁
➄
➃
➂
Operation 
Cycle
Output
Scan
Service
Comms
Overhead
Input 
Scan
Program
Scan
IMPORTANT Subroutine and interrupt instructions within your logic 
program may cause deviations in the way the operating 
cycle is sequenced.
Publication 1747-UM011G-EN-P - June 2008
5. Housekeeping and overhead - The time spent on memory.
Selecting Your Hardware Components 31
Selecting Modular 
Processors
SLC 500 modular processors are designed to meet a wide range of 
applications, from small stand-alone to large distributed systems and 
from simple to complex applications.
Processor Features
Memory size - The SLC 500 modular processors memory is user 
configurable for either data storage or program storage. Memory size 
is 1 K...64 K.
I/O points - The SLC 5/01 processor supports addressing of up to 3940 
I/O. The SLC 5/02, SLC 5/03, SLC 5/04, and SLC 5/05 processors 
support addressing of 4096 I/O. The SLC 500 modular processors are 
supported by over 60 different I/O modules including digital, analog, 
and intelligent I/O.
Performance - The SLC 500 modular processors are designed with 
throughput performance in mind. The program scan time for a typical 
instruction mix are 0.9 ms/K...8.0 ms/K depending on the processor. 
I/O scan times are 0.25 ms...2.6 ms depending on the processor and 
I/O installed in the system.
Advanced instruction support - The instructions available depends on 
the processor used. The following table lists the instructions 
supported by the SLC 500 modular processors.
Instruction Support SLC 5/01 SLC 5/02 SLC 5/03 SLC 5/04 SLC 5/05
Bit • • • • •
Timer and Controller • • • • •
Comparison • • • • •
Basic Math • • • • •
Move, Copy, and Bit Shift • • • • •
Sequencer • • • • •
Jump and Subroutine • • • • •
Messaging • • • •
STI • • • •
FIFO/LIFO • • • •
PID • • • •
Advanced Math and Trig • • •
Publication 1747-UM011G-EN-P - June 2008
32 Selecting Your Hardware Components
Processor Communication Options
The SLC 500 processors support several communication options. The 
following sections describe the available physical connections and 
protocol options used by the SLC 500 processors.
Physical Connection Options
Ethernet (10/100Base-T) channel offers:
• 10/100 Mbps communication rate.
• ISO/IEC 8802-3STD 802.3 (RJ45) connector for 10/100Base-T 
media.
• TCP/IP communication protocol.
• built-in isolation.
Data Highway Plus (DH+) channel offers:
• communication rates of 57.6 Kbaud, 115.2 Kbaud, and 230.4 
Kbaud.
• maximum network length of 3048 m (10,000 ft) at 57.6 Kbaud
• Belden 9463 (blue hose) cable connection between nodes (daisy 
chain connection).
• built-in isolation.
DH-485 channel offers:
• configurable isolation via the 1747-AIC or 1761-NET-AIC 
interfaces.
• maximum network length of 1219 m (4000 ft).
• RS-485 electrical specifications.
• Belden 9842 or Belden 3106A cable connection between nodes 
(daisy-chain connection).
RS-232 channel offers:
• communication rates up to 19.2 Kbaud (38.4 Kbaud SLC 5/04 
Indirect Addressing • • •
Floating Point Math • • •
ASCII • • •
Instruction Support SLC 5/01 SLC 5/02 SLC 5/03 SLC 5/04 SLC 5/05
Publication 1747-UM011G-EN-P - June 2008
and SLC 5/05 processors).
• maximum distance between devices is 15.24 m (50 ft).
Selecting Your Hardware Components 33
• RS-232C (EIA-232) electrical specifications.
• modem support.
• built-in isolation.
Protocol Options
EtherNet TCP/IP Protocol - Standard Ethernet, utilizing the TCP/IP 
protocol, is used as the backbone network in many office and 
industrial buildings. Ethernet is a local area network that provides 
communication between various devices at 10/100 Mbps. This 
network provides the same capabilities as DH+ or DH-485 networks, 
plus:
• SNMP support for Ethernet network management.
• optional dynamic configuration of IP addresses by using a 
BOOTP/DHCP utility.
• SLC 5/05 Ethernet data rate up to 40 times faster than SLC 5/04 
DH+ messaging.
• ability to message entire SLC 5/05 data files.
• much greater number of nodes on a single network possible 
compared to DH-485 (32) and DH+ (64).
Data Highway Plus (DH+) Protocol - The Data Highway Plus protocol 
is used by the PLC-5 family of processors and the SLC 5/04 processor. 
This protocol is similar to DH-485, except that it can support up to 64 
Processor Channel Connections
Processor Physical Communication Channel
DH-485 RS-232 DH+ Ethernet
SLC 5/01 and SLC 5/02 DH-485 protocol — — —
SLC 5/03 channel 0
—
DH-485(1), DF1 full-duplex, DF1 half-duplex 
master/slave, ASCII, DF1 radio modem, and 
Modbus RTU Master protocols
— —
channel 1 DH-485 protocol — — —
SLC 5/04 channel 0
—
DH-485(1), DF1 full-duplex, DF1 half-duplex 
master/slave, ASCII, DF1 radio modem, and 
Modbus RTU Master protocols
— —
channel 1 — — DH+ protocol —
SLC 5/05 channel 0
—
DH-485(1), DF1 full-duplex, DF1 half-duplex 
master/slave, ASCII, DF1 radio modem, and 
Modbus RTU Master protocols
— —
channel 1 — — — EtherNet TCP/IP protocol
(1) An 1761-NET-AIC interface is required when connecting to a DH-485 network.
Publication 1747-UM011G-EN-P - June 2008
devices (nodes) and runs at faster communication (baud) rates.
34 Selecting Your Hardware Components
DH-485 Protocol - The SLC 500 processors have a DH-485 channel 
that supports the DH-485 communication network. This network is a 
multi-master, token-passing network protocol capable of supporting 
up to 32 devices (nodes). This protocol allows:
• monitoring data and processor status, along with program 
uploading and downloading of any device on the network from 
one location.
• SLC processors to pass data to each other (peer-to-peer 
communication).
• operator interface devices on the network to access data from 
any SLC processor on the network.
DF1 full-duplex protocol - DF1 full-duplex protocol (also referred to 
as DF1 point-to-point protocol) lets two devices communicate with 
each other at the same time. This protocol allows:
• transmission of information across modems (dial-up, leased line, 
radio, or direct cable connections).
• communication to occur between Allen-Bradley products and 
third-party products.
DF1 half-duplex protocol (master and slave) - DF1 half-duplex 
protocol provides a multi-drop single master/multiple slave network 
capable of supporting up to 255 devices (nodes). This protocol also 
provides modem support and is ideal for SCADA (Supervisory Control 
and Data Acquisition) applications because of the network capability.
ASCII protocol - The ASCII protocol provides connection to other 
ASCII devices, such as bar code readers, weigh scales, serial printers, 
and other intelligent devices.
DF1 radiomodem protocol - The DF1 radio modem protocol, 
optimized for use with radio modem networks, is a hybrid between 
DF1 full-duplex protocol and DF1 half-duplex protocol. DF1 radio 
modem:
• supports Store and Forward capability.
• uses a node address (0...254) on channel 0.
Modbus RTU (Remote Terminal Unit) transmission mode Master protocol - 
The Modbus RTU Master protocol provides communication between Modbus 
RTU devices through a multi-drop single-master/multiple-slaves network. 
This protocol is capable of supporting up to 247 slave devices (nodes).
Publication 1747-UM011G-EN-P - June 2008
Selecting Your Hardware Components 35
SLC Communication Options
Communication 
Protocol
Processor
SLC 5/01 SLC 5/02 SLC 5/03 SLC 5/04 SLC 5/05
DH-485 peer-to-peer receive only receive and initiate receive and initiate — —
DH-485 via RS232 
port — —
receive and initiate(9) receive and initiate(9) receive and initiate(9)
DF1 via RS232 port 
(full-duplex or 
half-duplex master 
or slave)
receive only(1) receive only(1) receive and initiate receive and initiate receive and initiate
ASCII via RS232 port — — receive and initiate receive and initiate receive and initiate
Data Highway Plus 
(DH+)
receive only(2) receive only(2) receive and initiate(5) receive and initiate receive and initiate(5)
Ethernet — — receive and initiate(6) receive and initiate(6) receive and initiate
DeviceNet
—
receive and 
initiate(3)
receive and 
initiate(3)(7)
receive and 
initiate(3)(7)
receive and 
initiate(3)(7)
ControlNet
—
receive and 
initiate(4)
receive and 
initiate(4)(8)
receive and 
initiate(4)(8)
receive and 
initiate(4)(8)
Modbus RTU Master — — initiate only initiate only initiate only
(1) A 1747-KE or 1770-KF3 interface is required to bridge from DF1 (full-duplex or half-duplex slave only) to DH485 network.
(2) A ControlLogix gateway with a 1746-DHRIO interface and a 1756-DH485 interface is required to bridge from DH+ to DH-485 network.
(3) A 1747-SDN module is required for scanning I/O and for explicit messaging on DeviceNet network.
(4) A 1747-SCNR module is required for scanning I/O and for explicit messaging on ControlNet network. 
(5) The SLC 5/04’s channel-to-channel passthru feature may be used to bridge between DH+ and DH-485 network or between DH+ and DF1 full-duplex network (DH+ to DF1 
full-duplex passthru available starting with OS401). Another option is to use the 1785-KE interface to bridge between DH+ and DF1 full-duplex or DH+ and DF1 half-duplex 
master/slave network.
(6) A 1761-NET-ENI interface is required to bridge from DF1 full-duplex to Ethernet network.
(7) A 1761-NET-DNI interface is required to bridge from DF1 to DeviceNet network.
(8) A 1747-KFC15 module or 1770-KFC15 interface is required to bridge from DF1 to ControlNet network.
(9) If using 1747-AIC interface for isolation, connect to DH-485 network using 1747-PIC interface. If using a 1761-NET-AIC interface for isolation, connect directly to DH-485 
network with 1747-CP3 serial cable (or equivalent RS-232 null-modem cable).
TIP The 1785-KE module requires the use of a 1771 series chassis 
and power supply.
Publication 1747-UM011G-EN-P - June 2008
36 Selecting Your Hardware Components
Selecting Discrete I/O 
Modules
There are three types of discrete I/O modules: input, output, and 
combination. They are available in a wide variety of densities 
including 4, 8, 16, and 32 point and can interface to ac, dc, and TTL 
voltage levels. Output modules are available with solid-state ac, 
solid-state dc, and relay contact type outputs.
For a complete listing of discrete I/O modules and specifications, 
contact your Allen-Bradley sales office for the latest selection guide, 
publication 1747-SG001.
Selecting Specialty I/O 
Modules
The SLC 500 family offers specialty I/O modules that enhance your 
control system. Modules range in function from analog interface to 
motion control, from communication to high-speed counting. 
For a complete listing of specialty I/O modules and their 
specifications, contact your Allen-Bradley sales office for the latest 
selection guide, 1747-SG001.
Selecting Power Supplies To select a power supply, you need:
• power supply specifications.
• power supply worksheet, one for each chassis.
• SLC 500 Systems Selection Guide, publication 1747-SG001.
When configuring a modular system, you must have a power supply 
for each chassis. Careful system configuration will result in the best 
performance. Excessive loading of the power supply outputs can 
cause a power supply shutdown or premature failure.
There are three different ac power supplies and four dc power 
supplies. For ac power supplies, the 120/240V selection is made by a 
jumper. Place the jumper to match the input voltage.
SLC power supplies have an status indicator that illuminates when the 
power supply is functioning properly. 
ATTENTION Ensure that the power supply jumper is in the correct position 
before supplying power to the SLC 500 system or personal 
injury or damage to the system may result.
Publication 1747-UM011G-EN-P - June 2008
Selecting Your Hardware Components 37
1746-P7 Current Capacity
Example for Selecting Power Supplies
Select a power supply for chassis 1 and chassis 2 in the control system 
below. 
3.6 A
2.64 A
2.0 A
0.87 A
0.625 A
0.46A 
10V 12.2V 15V 19.2V 30V
24V dc 
Output 
Current
5V dc 
Output 
Current
Input Voltage (dc)
Chassis 2Chassis 1
1747-AIC Interface 1747-AIC Interface 1747-PIC Interface Personal 
Computer
DH-485 
Network
? ?? ?
Publication 1747-UM011G-EN-P - June 2008
38 Selecting Your Hardware Components
Example Worksheet for Selecting a 1746 Power Supply
If you have a multiple chassis system, make copies of the Power 
Supply Worksheet found on page 230. 
For a detailed list of device load currents, refer to the SLC 500 Modular 
Chassis and Power Supplies Technical Data, publication 1746-TD003.
 0 1 2 3Slot
Chassis 1
Slot Numbers Description Cat. No. Power Supply at 
5V dc (Amps)
Power Supply at 
24V dc (Amps)
0 Processor unit 1747-L511 0.090 0.000
1 Input module 1747-IV8 0.050 0.000
2 Transistor output 
module
1746-OB8 0.135 0.000
3 Triac output module 1746-OA16 0.370 0.000
Peripheral device Isolated link coupler 1747-AIC 0.000 0.085
Total Current: 0.645 0.085(1)
(1) The 1746-P1 power supply is sufficient for Chassis #1. The internal current capacity for this power supply is 2 A at 5V dc, 
0.46 A at 24V dc.
?
 0 1 2 3 4 5 6Slot
Chassis 2
Slot Numbers Description Cat. No. Power Supply at
 5V dc (Amps)
Power Supply at
 24V dc (Amps)
0 Processor unit 1747-L514 0.090 0.000
1 Output module 1746-OW16 0.170 0.180
2 Combination module 1746-IO12 0.090 0.070
3, 4, 5, 6 Analog output 
modules
1746-NO4I 0.220
(4 x 0.055)
0.780 
(4 x 0.195)
Peripheral device Isolated link coupler 1747-AIC 0.000 0.085
Peripheral device Interface converter 1746-PIC Not applicable Not applicable
Total Current: 0.570 1.115(1) 
(1) The 1746-P4 power supply is sufficient for Chassis #2. The internal current capacity for this power supply is 10 A at 5V dc, 
2.88 A at 24V dc; not to exceed 70 W.
TIP Consider future system expansion when selecting a power 
supply.
Publication 1747-UM011G-EN-P - June 2008
Selecting Your Hardware Components 39
Procedure
1. For each slot of the chassis that contains a module, list the slot number, the catalog number of the module, and its 5V and 24V maximum currents. Also 
include the power consumption of any peripheral devices that may be connected to the processor other than a DTAM or PIC device—the power 
consumption of these devices is accounted for in thepower consumption of the processor.
Chassis Number 1 Maximum Currents Chassis Number 2 Maximum Currents
Slot Number Cat. No. at 5V dc at 24V dc Slot Number Cat. No. at 5V dc at 24V dc
Slot 0 1747-L511 0.090 A 0.000 A Slot 0 1747-L514 0.090 A 0.000 A
Slot 1 1746-IV8 0.050 A - Slot 1 1746-OW16 0.170 A 0.180 A
Slot 2 1746-OB8 0.135 A - Slot 2 1746-NO4I 0.055 A 0.195 A
Slot 3 1746-OA16 0.370 A - Slot 3 1746-NO4I 0.055 A 0.195 A
Slot Slot 4 1746-NO4I 0.055 A 0.195 A
Slot Slot 5 1746-NO4I 0.055 A 0.195 A
Slot Slot 6 1746-IO12 0.090 A 0.070 A
Slot Slot
Peripheral Device 1747-AIC - 0.085 A Peripheral Device 1747-AIC - 0.085 A
Peripheral Device Peripheral Device
2.Add the loading currents of all the system 
devices at 5 and 24V dc to determine the 
Total Current.
0.645 A 0.085 A 2.Add the loading currents of all the system 
devices at 5 and 24V dc to determine the 
Total Current.
0.570 A 1.115 A
3.For 1746-P4 power supplies, calculate the total power consumption of all system devices. If you are not using a 1746-P4 power supply, go to step 4.
Current Multiply by = Watts Current Multiply by = Watts
Total Current at 5V dc 0.645 A 5V 3.225 W Total Current at 5V dc 0.570 A 5V 2.850 W
Total Current 
at 24V dc
0.085 A 24V 2.040 W Total Current 
at 24V dc
1.115 A 24V 26.76 W
User Current 
at 24V dc
0.500 A 24V 12.00 W User Current 
at 24V dc
0.500 A 24V 12.00 W
Add the Watts values to determine Total Power
(cannot exceed 70 Watts)
17.26 W Add the Watts values to determine Total Power
(cannot exceed 70 Watts)
41.61 W
4.Choose the power supply from the list of catalog numbers shown below. Compare the Total Current required for the chassis with the Internal Current 
capacity of the power supplies. Be sure that the Total Current consumption for the chassis is less than the Internal Current Capacity for the power 
supply, for both 5V and 24V loads.
Cat. No. Internal Current 
Capacity
Cat. No. Internal Current 
Capacity
at 5V dc at 24V dc at 5V dc at 24V dc
1746-P1 2.0 A 0.46 A 1746-P1 2.0 A 0.46 A
1746-P2 5.0 A 0.96 A 1746-P2 5.0 A 0.96 A
1746-P3 3.6 A 0.87 A 1746-P3 3.6 A 0.87 A
1746-P4 (see step 3) 10.0 A 2.88 A 1746-P4 (see step 3) 10.0 A 2.88 A
1746-P5 5.0 A 0.96 A 1746-P5 5.0 A 0.96 A
1746-P6 5.0 A 0.96 A 1746-P6 5.0 A 0.96 A
1746-P7(1) 12V dc input 2.0 A 0.46 A 1746-P7(1) 12V dc input 2.0 A 0.46 A
24V dc input 3.6 A 0.87 A 24V dc input 3.6 A 0.87 A
Required Power Supply 1746-P1 Required Power Supply 1746-P4
(1) See 1746-P7 current capacity graph on page 37.
Publication 1747-UM011G-EN-P - June 2008
40 Selecting Your Hardware Components
Selecting Enclosures The enclosure protects the equipment from atmospheric 
contamination. Standards established by the National Electrical 
Manufacturer’s Association (NEMA) define enclosure types, based on 
the degree of protection an enclosure will provide. Use a fan to 
circulate the air of sealed enclosures that use convection cooling to 
dissipate heat. Select a NEMA-rated enclosure that suits your 
application and environment. The enclosure should be equipped with 
a disconnect device. To calculate the heat dissipation of your 
controller, see appendix H.
Selecting Operator 
Interfaces
Use an operator interface to program and/or monitor your SLC 500 
controller. You can choose from several Allen-Bradley operator 
interface devices.
Programming with a Personal Computer
Contact Rockwell Software or your local Allen-Bradley distributor for 
specifications and availability of software packages available to 
program the SLC 500 Modular Controllers.
AIC+ Advanced Interface Converter (1761-NET-AIC)
The AIC+ advanced interface converter provides communication links 
between various networked devices. It has three communication 
ports: one for DH-485 and two for RS-232. The AIC+ converter is 
compatible with a variety of SLC and MicroLogix controllers and 
peripherals.
1747-PIC RS-232/DH485 Interface Converter
For communication with a SLC 5/01, SLC 5/02, or SLC 5/03 processor, 
you can use an RS-232/DH-485 interface convertor (catalog number 
1747-PIC) between the computer and SLC controller. The converter 
includes a 279.4 mm (11 in.) ribbon cable, already attached to the 
converter, for connection to the computer serial port and a catalog 
number 1746-C10 cable for connection to the controller.
If you are using an SLC 5/03, SLC 5/04, or SLC 5/05 processor, you do 
not need the 1747-PIC interface. You can program via the RS-232 
Publication 1747-UM011G-EN-P - June 2008
channel using DF1 full-duplex protocol or DH485 protocol and RS-232 
program cable (catalog number 1747-CP3).
Selecting Your Hardware Components 41
1747-UIC USB to DH485 Interface Converter
For communication with an SLC 5/01 through SLC 5/05 processor, you 
can connect the 1747-UIC interface between the computer’s USB port 
and the SLC controller. The 1747-UIC interface features an RS-232 port 
for communication with SLC 5/03 and later processors and an RS-485 
port for communication with SLC 5/03 and previous processors.
Monitoring with a Data Table Access Module
The Data Table Access Module (DTAM) is a plant floor device that lets 
you access data file information, change operating modes, monitor 
and clear processor faults, and transfer the user program between 
RAM and an EEPROM memory module with any SLC 5/01, SLC 5/02, 
or SLC 5/03 (except for the 1747-L533 processor) processor. You 
cannot use it to create new programs. Important features of DTAM 
include:
• shorthand addressing, which provides easier access to data files.
• display prompts in six, user-selectable languages: English, 
French, German, Italian, Spanish, and Japanese.
• UL listed to US and Canadian Safety Standards.
• NEMA type 12 and 13 enclosures.
• point-to-point interface to an SLC family processor, or as a 
network device on a DH-485 network.
Monitoring with a PanelView or PanelView Plus Operator 
Terminal
The PanelView or PanelView Plus operator terminals provide operator 
interface capabilities in space-saving, flat-panel designs. Offering 
optimum viewing angles, these electronic operator interfaces feature 
pixel graphics and high-performance functionality in both color and 
monochrome displays. The PanelView operator terminals let you enter 
input by using function keys or a touch screen, depending upon the 
model.
All PanelView and PanelView Plus operator terminals are available 
with DF1 or DH-485 (RS-232) communication capability, letting them 
communicate directly with channel 0 on an SLC 5/03, SLC 5/04, or SLC 
5/05 processor. The larger versions also offer DH-485 (RJ-45), DH+, 
Remote I/O, Ethernet, DeviceNet, and ControlNet network 
Publication 1747-UM011G-EN-P - June 2008
connectivity. 
42 Selecting Your Hardware Components
Selecting a Memory 
Module for the SLC 5/01 and 
SLC 5/02 Processors
You can plug these optional EEPROM (Electrically Erasable 
Programmable Read Only Memory) memory modules into the SLC 500 
controller. With a memory module, you can:
• save the contents of the processor RAM for storage purposes.
• load the contents of the EEPROM memory into the processor 
RAM.
Adapter sockets (catalog number 1747-M5) are required when 
inserting EEPROMs or UVPROMs into the programming and erasing 
equipment.
To program a memory module, see your programming software user 
manual.
EEPROM Memory Modules
These optional memory modules provide a non-volatile memory 
back-up in a convenient modular form. The modules plug into a 
socket on the processor.
You can store (save) your program in the EEPROM by inserting it into 
the processor and programming software to download the program.
You can use an EEPROM module as a master, or you can use an 
archived processor file as the source by using the software PROM 
translatorutility.
Adapter sockets are required when inserting memory modules into 
commercially available PROM programmer. The memory module fits 
into the adapter socket and then into a PROM programmer.
ATTENTION Make sure the adapter is inserted properly into the programming 
equipment or damage could result.
Memory Module Compatibility
Cat. No. Description
Use with this processor type
SLC 5/01 SLC 5/02
1747-L511 1747-L514 1747-L524
1747-M1 1 K User Words EEPROM X X X
1747-M2 4 K User Words EEPROM X X X
Publication 1747-UM011G-EN-P - June 2008
1747-M5 Adapter Socket X X X
Selecting Your Hardware Components 43
Memory Backup for the 1747-L511, SLC 5/01 Processor
The curve below illustrates the ability of the memory back-up 
capacitor to maintain the contents of the RAM in a 1747-L511 
processor. To back up the memory for a longer period of time, a 
lithium battery, catalog number 1747-BA, is required.
Selecting a Memory 
Module for SLC 5/03, 
SLC 5/04, and SLC 5/05 
Processors
The memory module for the SLC 5/03, SLC 5/04, and SLC 5/05 
processors is called Flash EPROM (Flash Erasable Programmable Read 
Only Memory). Flash EPROMs combine the programming versatility of 
EEPROMs with the security precautions of UVPROMs. This means that 
you have the option of leaving your EPROM programs write-protected 
or unprotected. Write-protect the EPROM by using either your 
software or a PROM programmer.
The memory modules consist of a Flash EPROM mounted on a circuit 
board with a connector and plastic housing.
Adapter sockets (catalog number 1747-M15) are required when 
inserting memory modules into commercially available PROM 
0
0 5
(41˚F)
20
(68˚F)
25
(77˚F)
10
(50˚F)
15
(59˚F)
40
(104˚F)
45
(113˚F)
50
(122˚F)
55
(131˚F)
60
(140˚F)
30
(86˚F)
35
(95˚F)
5
10
15
20
25
30
Temperature °C (°F)
Time 
(Days)
Capacitor Memory Back-up Time VS Temperature
Publication 1747-UM011G-EN-P - June 2008
44 Selecting Your Hardware Components
programmer. The 1747-M15 Series B adapter socket is required for 
use with the memory module (catalog number 1747-M13).
See the table below for details on the Flash EPROM and adapter 
socket.
To program a memory module, refer to your programming software 
user manual or help resource. Follow this procedure to program a 
memory module.
1. Set the memory module configuration bits (S:1/10 to S:1/12) in 
your offline program file. Refer to SLC 500 Instruction Set 
Reference Manual, publication 1747-RM001, for details on the 
Memory Module Configuration Bits. 
2. Download your program file to your processor.
3. Go online with the processor and burn the program to the 
EEPROM memory module (per the instructions outlined in your 
programming software user manual or help resource).
EEPROM Burning Options You can burn a program into an EEPROM memory module using a 
processor that is the same or different from the one used to run the 
program. When burning EEPROMs, keep the following conditions in 
mind:
• The processor burning the EEPROM must be of the same type 
and have the same OS version or lower than the target 
processor.
ATTENTION Make sure the adapter is inserted properly in the programming 
equipment or damage could result.
Memory Module Compatibility
Cat. No. Description
Use with this processor type
SLC 5/03 SLC 5/04 SLC 5/05
1747-L531, 1747-L532, 
1747-L533
1747-L541, 1747-L542, 
1747-L543
1747-L551, 1747-L552, 
1747-L553
1747-M13 Supports up to 64 K of user-memory backup X
(Series C
OS302 or later)
X
(Series C
OS401 or later)
X
(Series C
OS501 or later)
Publication 1747-UM011G-EN-P - June 2008
Selecting Your Hardware Components 45
• The program size cannot exceed the processor memory size. For 
instance, an SLC 5/01 4 K processor can burn an EEPROM for a 
SLC 5/01 1 K processor as long as the program does not exceed 
1 K.
• The I/O and chassis configuration of the burning processor does 
not have to match the I/O configuration of the program being 
burned.
• You do not have to enter the Run mode before burning an 
EEPROM. If the run mode is entered and the chassis 
configuration does not match, a major fault will occur. If you 
burn an EEPROM while in the fault mode, the fault will also be 
saved in the EEPROM.
The following table summarizes the above conditions as to the type of 
processor you can use to burn EEPROMs for other processors.
EEPROM Burning Options
To burn EEPROMs for these processors
Use these 
processors
SLC 
5/01 
(1K)
SLC 
5/01 
(4K)
SLC 
5/02 
(4K)
SLC 
5/03 
(8K)
SLC 
5/03 
(16K)
SLC 
5/03 
(32K)
SLC 
5/04 
(16K)
SLC 
5/04 
(32K)
SLC 
5/04 
(64K)
SLC 
5/05 
(16K)
SLC 
5/05 
(32K)
SLC 
5/05 
(64K)
SLC 5/01 (1K) • 1 K max
SLC 5/01 (4K) 1 K max •
SLC 5/02 (4K) •
SLC 5/03 (8K) • 8 K 
max
8 K 
max
SLC 5/03 (16K) 8 K 
max
• 16 K 
max
SLC 5/03 (32K) 8 K 
max
16 K 
max
•
SLC 5/04 (16K) • 16 K 
max
16 K 
max
SLC 5/04 (32K) 16 K 
max
• 32 K 
max
SLC 5/04 (64K) 16 K 
max
32 K 
max
•
SLC 5/05 (16K) • 16 K 
max
16 K 
max
SLC 5/05 (32K) 16 K 
max
• 32 K 
max
SLC 5/05 (64K) 16 K 
max
32 K 
max
•
Publication 1747-UM011G-EN-P - June 2008
• valid combination
46 Selecting Your Hardware Components
Selecting Isolation 
Transformers
If there is high frequency conducted noise in or around your 
distribution equipment, use an isolation transformer in the ac line to 
the power supply. This type of transformer provides isolation from 
your power distribution system and is often used as a step down 
transformer to reduce line voltage. Any transformer used with the 
controller must have a sufficient power rating for its load. This power 
rating is generally expressed in voltamperes (VA).
To select an appropriate isolation transformer, calculate the power 
required by the chassis power supply (or supplies if more than one 
chassis in system) and any input circuits and output loads that are 
connected through this transformer.
You can find the power requirement (VA rating) for the chassis power 
supplies in the specifications starting on page 177. The power requirement for 
the input circuits is determined by the number of inputs, the operating voltage, 
and the nominal input current. The power requirement for output loads is 
determined by the number of outputs, the load voltage, and load current.
For example, if you have a 1746-P1 power supply, a 16-point ac input 
module, catalog number 1746-IA16, (12 mA at 120V ac) and a 16-point 
ac triac output module, catalog number 1746-OA16, (0.5A at 120V ac), 
the power consumed would be:
135VA + (16)(120V)(0.012 A) + (16)(120V)(0.5 A) = 1118VA
In general, we recommend that the transformer is oversized to 
provide some margin for line voltage variations and other factors. 
Typically a transformer that is 25% larger than the calculated VA is 
sufficient.
Most industrial environments are susceptible to power transients or 
spikes. To help insure fault-free operation and protection of 
equipment, use suppression devices on power line to the equipment 
in addition to the isolation equipment.
IMPORTANT In this case, 0.5 A is the maximum rating of the triac output at 30 
°C (86 °F). If the load draws less than 0.5 A, this figure may be 
reduced accordingly. The output portion of the VA calculation 
should reflect the current requirements of selected loads.
Publication 1747-UM011G-EN-P - June 2008
Selecting Your Hardware Components 47
Special Considerations The recommendations given previously provide favorable operating 
conditions for most controller installations. Some applications may 
involve adverse conditions, such as excessive

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